import type { Router } from 'vue-router'

import { DEFAULT_HOME_PATH, LOGIN_PATH } from '@vben/constants'
import { preferences } from '@vben/preferences'
import { useAccessStore, useUserStore } from '@vben/stores'
import { startProgress, stopProgress } from '@vben/utils'

import { accessRoutes, coreRouteNames } from '#/router/routes'
import { useAuthStore } from '#/store'

import { generateAccess } from './access'

/**
 * 通用守卫配置
 * @param router
 */
function setupCommonGuard(router: Router) {
    // 记录已经加载的页面
    const loadedPaths = new Set<string>()

    router.beforeEach(async (to) => {
        to.meta.loaded = loadedPaths.has(to.path)

        // 页面加载进度条
        if (!to.meta.loaded && preferences.transition.progress) {
            startProgress()
        }
        return true
    })

    router.afterEach((to) => {
        // 记录页面是否加载,如果已经加载，后续的页面切换动画等效果不在重复执行

        loadedPaths.add(to.path)

        // 关闭页面加载进度条
        if (preferences.transition.progress) {
            stopProgress()
        }
    })
}

/**
 * 权限访问守卫配置
 * @param router
 */
function setupAccessGuard(router: Router) {
    router.beforeEach(async (to, from) => {
        const accessStore = useAccessStore()
        const userStore = useUserStore()
        const authStore = useAuthStore()

        // 基本路由，这些路由不需要进入权限拦截
        if (coreRouteNames.includes(to.name as string)) {
            if (to.path === LOGIN_PATH && accessStore.accessToken) {
                return decodeURIComponent((to.query?.redirect as string) || userStore.userInfo?.homePath || DEFAULT_HOME_PATH)
            }
            return true
        }

        // accessToken 检查
        if (!accessStore.accessToken) {
            // 明确声明忽略权限访问权限，则可以访问
            if (to.meta.ignoreAccess) {
                return true
            }

            // 没有访问权限，跳转登录页面
            if (to.fullPath !== LOGIN_PATH) {
                return {
                    path: LOGIN_PATH,
                    // 如不需要，直接删除 query
                    query: to.fullPath === DEFAULT_HOME_PATH ? {} : { redirect: encodeURIComponent(to.fullPath) },
                    // 携带当前跳转的页面，登录后重新跳转该页面
                    replace: true
                }
            }
            return to
        }

        // 是否已经生成过动态路由
        if (accessStore.isAccessChecked) {
            return true
        }

        // 生成路由表
        // 当前登录用户拥有的角色标识列表
        const userInfo = userStore.userInfo || (await authStore.fetchUserInfo())
        const userRoles = userInfo.roles ?? []

        // 生成菜单和路由
        const { accessibleMenus, accessibleRoutes } = await generateAccess({
            roles: userRoles,
            router,
            // 则会在菜单中显示，但是访问会被重定向到403
            routes: accessRoutes
        })

        // console.log('[accessibleMenus]', accessibleMenus, accessibleRoutes)

        // 保存菜单信息和路由信息
        accessStore.setAccessMenus(accessibleMenus)
        accessStore.setAccessRoutes(accessibleRoutes)
        accessStore.setIsAccessChecked(true)
        const redirectPath = (from.query.redirect ?? (to.path === DEFAULT_HOME_PATH ? userInfo.homePath || DEFAULT_HOME_PATH : to.fullPath)) as string

        return {
            ...router.resolve(decodeURIComponent(redirectPath)),
            replace: true
        }
    })
}

/**
 * 项目守卫配置
 * @param router
 */
function createRouterGuard(router: Router) {
    /** 通用 */
    setupCommonGuard(router)
    /** 权限访问 */
    setupAccessGuard(router)
}

export { createRouterGuard }
